.\" Copyright (c) 2020 Vladimir Kondratyev <wulf@FreeBSD.org>
.\"
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.Dd October 2, 2025
.Dt USBHID 4
.Os
.Sh NAME
.Nm usbhid
.Nd USB HID transport driver
.Sh SYNOPSIS
To compile this driver into the kernel,
place the following lines in your
kernel configuration file:
.Bd -ragged -offset indent
.Cd "device usbhid"
.Ed
.Pp
Alternatively, to load the driver as a
module at boot time, place the following line in
.Xr loader.conf 5 :
.Bd -literal -offset indent
usbhid_load="YES"
.Ed
.Sh DESCRIPTION
The
.Nm
driver provides a interface to USB Human Interface Devices (HIDs).
.Sh SYSCTL VARIABLES
The following variables are available as both
.Xr sysctl 8
variables and
.Xr loader 8
tunables:
.Bl -tag -width indent
.It Va hw.usb.usbhid.enable
Enable
.Nm
and make its priority greater than other USB HID drivers, such as
.Xr ukbd 4 ,
.Xr ums 4 ,
and
.Xr uhid 4 .
Default is 1.
.El
.Bl -tag -width indent
.It Va hw.usb.usbhid.debug
Debug output level, where 0 is debugging disabled and larger values increase
debug message verbosity.
Default is 0.
Debug messages are printed on the system console and can be viewed using
.Xr dmesg 8 .
.El
.Sh SEE ALSO
.Xr ehci 4 ,
.Xr hkbd 4 ,
.Xr hms 4 ,
.Xr ohci 4 ,
.Xr uhci 4 ,
.Xr usb 4 ,
.Xr xhci 4 ,
.Xr usbconfig 8
.Sh HISTORY
The
.Nm
driver first appeared in
.Fx 13.0 .
It was enabled by default in
.Fx 15.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An Vladimir Kondratyev Aq Mt wulf@FreeBSD.org .
